GTI® designs and supplies the most advanced and reliable Encapsulation Systems for Unbonded Post-tensioning available today. The GTI Zero Void® Encapsulation System is a proven method of providing corrosion protection for unbonded tendons. Our patented system consists of an anchor casting encapsulated in a thick polyethylene material with excellent chemical and cold temperature resistance.

The GTI Zero Void® System eliminates the need to fill sleeves (tubes) at stressing-ends with grease as required by ACI and PTI Guide Specifications. The Zero Void® System uses seals to provide thermal tolerance for shrinkage of the sheathing and watertight sealing of the encapsulation.

The Zero Void® Stressing-End Metal Ring utilizes a metal ring with a groove to protect the encapsulation from the heat generated by an oxyacetylene torch. The groove allows the outer lip of Zero Void® Grease Cap to be installed to the proper depth thus allowing an easy gauge of proper cap installation.

NOTICE OF EXCLUSIVE TERMS AND CONDITIONS: ALL SALES OR PURCHASES BY GTI RESPECTIVELY INCORPORATE AND ADOPT GTI'S STANDARD TERMS AND CONDITIONS OF SALE OR PURCHASE AND THE SPECIFIC TERMS (E.G. DELIVERY, PRICE, QUANTITY) OF EACH SPECIFIC TRANSACTION ALL AS SET FORTH IN THE CONTROLLING PURCHASE ORDER.